barcode_scan_profiles — SYMBOL `barcode1d` op

• Data kinds: image2d → table

• Call: import fullseye as fs; fs.ledger.barcode_scan_profiles(image, angle_deg=None, n_lines=10, *, band=(0.1, 0.9), step=0.5) (to call the implementation directly, import barcode1d; barcode1d.barcode_scan_profiles(image, angle_deg=None, n_lines=10, *, band=(0.1, 0.9), step=0.5); from the registry, opssymbol.get("barcode_scan_profiles"))

• GPU: none (CPU reference implementation only)

Usage

Extract n_lines parallel scan lines perpendicular to the bars from an image (table).

> The detailed description below is the original text — the summary and the headings are translated.

Sample n_lines parallel scan lines perpendicular to the bars. The bar-normal direction is angle_deg (degrees from the image x axis, counter-clockwise in display = row up) or, if None, the dominant gradient direction of the structure tensor. Lines are spaced evenly over the band fraction of the strong-gradient region's extent along the bars (ISO-style 10 scans over 10 %..90 % of the height), sampled every step pixels by bilinear interpolation over the whole image width. Returns profiles (n_lines, L), angle_deg, coherence (0..1, how line-like the texture is), offsets (px across the bars), step and origin / direction / normal (row, col) so a profile sample s of line k maps to origin + offsets[k] * normal + s * step * direction.

空の入力(8 画素未満の辺)は ValueError。拒否(ValueError): 2-D でない、非有限、n_lines < 1、band が (0, 1) の昇順でない、step <= 0。勾配の無い画像は Barcode1DError。

Detailed usage guide

• symbol_reading family guide

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

• poc_symbol_package_1d — py -3.11 examples/poc_symbol_package_1d.py

Ops the type connects to (they accept `table` as input)

render_symbol · symbol_read_trials · symbol_read_pod · ocr_classify · ocr_read_line · ocr_read_trials

Same category (`barcode1d`)

encode_barcode1d · ean_check_digit · decode_barcode_profile · read_barcode1d

*Provenance: barcode1d.py — SYMBOL operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

barcode_scan_profiles — SYMBOL barcode1d op